A district map hangs behind Democratic candidate for 6th congressional district Jon Ossoff as he talks to supporters during a stop at a campaign office in Chamblee, Ga., Monday, June 19, 2017. The race between Ossoff and Republican Karen Handel is seen as David Goldman/AP

The mood in the north Atlanta suburbs is electric. Election day has finally come for Democrat Jon Ossoff and Republican Karen Handel in the most expensive U.S. House race in history, with more than $50 million in spending in the district.

For Ossoff, a 30-year-old who originally ran to "make Trump furious" but has focused locally for months, a win would flip this longtime Republican seat blue. (The pivot to a local focus doesn’t account for the truck Ossoff’s campaign is paying to drive around the district urging voters to "Hold Donald Trump accountable.”) A loss would leave Democrats wondering how they missed their best opportunity yet to win a GOP House seat in the Trump era. Handel, a former Georgia secretary of state, aims to prevent a groundswell of Democratic grassroots groups from "flipping the 6th."

But whether candidates say they’re focused on the local or the national, the implications of today’s election are clear: With Ossoff’s campaign bolstered by small, anti-Trump grassroots efforts, a win would be a boon for the resistance and speak volumes about its ability to influence electoral politics heading into the 2018 midterms and beyond. Likewise for the resistance, a loss would be a devastating reality check.

The latest polling shows the race is neck and neck going into election day. Both campaigns have spent the last several days focused on get-out-the-vote efforts. Ossoff told supporters Monday that "there's nothing more effective at getting out the vote than neighbors knocking on neighbors' doors."

On Twitter, President Donald Trump called on voters to support Handel. The final hours of the campaign saw mudslinging against Ossoff. A radio ad aired by a pro-Trump super PAC misquoted Barack Obama to discourage black voters. A local Republican Party chairman said he believes the shooting of Rep. Steve Scalise (R-La.) will put Handel over the top. And a TV ad tried to connect Ossoff to Scalise's shooter. (There's no connection, and Handel's campaign condemned the ad.)

There is another special election in South Carolina. Even Democratic members of Congress are not following that race closely, where Democrat Archie Parnell is hoping to poach a deeply conservative district from the Republicans. The odds of that appear slim.

Mic will be covering the Georgia special election on the ground throughout Tuesday.

This is Mic's daily read on Donald Trump's America.Good morning from the Sheraton Perimeter North in Sandy Springs, Georgia. Today is the big day for Jon Ossoff and Karen Handel. Mic will be covering all angles, all day long.

Today's question:Would Jon Ossoff beating Karen Handel send a message nationally? Or is it just one race? Email us attrumpsamerica@mic.com.

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What we're watching

Even more: A young American, who was once imprisoned by the North Korean regime, has died.

Trump's agenda today: Meeting with the president of Ukraine. Holding a legislative affairs lunch. Dining with Vice President Mike Pence.

Senate Democrats hold the floor over health care

Overshadowed by the special election coverage, Senate Democrats persisted. They held the Senate floor until early Tuesday morning to highlight Republican efforts to craft their health care reform package in secret. "This is a moment. It's a test," Sen. Cory Booker (D-N.J.) said late Monday evening. "History will look back and see what this body did at this moment in history. I fear we're going to fail the test."

To pass a bill before the July 4 recess, Republicans would need to submit it this week for scoring by the Congressional Budget Office.